This lining up is referred to as opposition and only happens ... NASA breakthrough as super telescope discovers incredible new planet NASA's new $3.2bn telescope that's about to look for 'alien ...

While it isn't particularly unusual for a few planets to line up in the night sky, four or five planets at once is less ...

While all seven planets could appear in some form in parts of the U.S., not all of them will be visible to the naked eye.

Stargazers will be treated to a rare alignment of seven planets on 28 February when Mercury joins six other planets that are already visible in the night sky. Here's why it matters to scientists.

All seven planets are going to line up in the night sky on Friday in a rare planetary parade that will not be repeated for another 15 years. The celestial display will see Mars, Jupiter, Uranus, Venus ...

Seven planets will line up for a rare "planetary parade" today (Feb. 28) and you can watch it live online, beginning at 12:00 p.m. ET (1700 GMT).

These planetary hangouts happen when several planets appear to line up in the night sky at once. They're not in a straight line, but are close together on one side of the sun. The astronomical ...

This image of Mars was taken by NASA's Mars Reconnaissance Orbiter on March 10, 2006. Mars will be part of the planetary parade on Friday. File Photo by NASA/UPI 32,404 people played the daily ...